Rocker-valve gearing for engines.



N0. 668,23l. Patented Feb. I9, I90". W. H. STRAUSE. ROCKER VALVE GEARINGFOR ENGINES.

(Application filed- July 19, 1900.)

(No Model.)

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ROCKER-VALVE GEARING FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 668,231, dated February19, 1901.

Application filed July 19, 1900. Serial No. 24,243. (No model.)

To all whom it ntay concern.-

Be it known that 1, WILLIAM H. STRAUsE, a citizen of the United Statesof America, residing at ()skaloosa, in the county of Mahask'a and Stateof Iowa, have invented certain new and useful Improvements inRocker-Valve Gearing for Locomotive-Engines and Motion of Gearing, ofwhich the followingis a specification, reference being had therein tothe accompanying drawings.

This invention relates to rocker-valve gearing for locomotive-engines.

One object of the invention is to provide means pivotally connectedbetween the two rocker-arms, working in one box, coupled to one leverleading back from the main rod of the engine for shifting the parts, soas to cause a forward or backward movement of the engine, according tothe position at which the link is set.

A further object of this invention is to ob viate the use of eccentricsand the mechanism which form the necessary adjuncts, whereby the stripson the cams are dispensed with and rotary motion and its consequentfriction are supplanted by the pivotal connection illustrated.

Furthermore, the object of theinvention is to provide mechanism forshifting the link which will possess advantages in points of simplicity,durability, and efficiency and which will prove comparativelyinexpensive to produce and sustain.

With the above and other objects in view the invention consists of partsto be hereinafter described and specifically claimed.

In describing the invention in detail reference will be had to theaccompanying drawings, forming part of this specification,wherein likecharacters denote corresponding parts in the views, and in which Figure1 shows an elevation of the power mechanism of an engine with theinvention applied. Fig. 2 is a sectional view taken on the line a: ofFig. 1.

In the drawings, 1 indicates a cylinder, 2 a steam-chest, 3a piston-rod,4 a guide, 5 a valve-stem, and 6 a link, all of which being of ordinaryconstruction need not be described in detail.

The reach-rod 7 is pivotally connected to the bell-crank 8, and thebell-crank in turn being pivoted to the standard 9. Alink-lifter 10 ispivoted to the horizontally-disposed leg of the bell-crank lever and isso constructed as to elevate or lower the link, according to themovement of the reach-rod. Link-blades 11 are pivotally connected to thelinks at its edge, rear, top, and bottom, said blades extendingrearwardly.

The valve-gear com prises the metallic strips 12,having their forwardends pivoted together at 13, said strips being also pivoted to the rearends of the link-blades 11. The strips 12 are curved longitudinally inopposite directions, and the upper strip is pivotally connected to thearm 13, which is also pivoted at one end to the main rod 14, so as totake motion therefrom. A strip 15 is pivoted to the lower strip 12 andto the arm 13, so as to connect the arm 13 through the strips 12 and 15with the lower link-blade. It will be observed that the blade which ispivoted to the top of the link is coupled to the strip 12 on a lineabove the center of motion and that the rear end of the bottom blade iscoupled to the strip 12 below the center of motion. The link 6 actuatestheblock 16, coupled to the valvestem to the rear of the steam-chest.

The construction, operation, and advantages will, it is thought, beunderstood from the foregoing description, it being noted the variouschanges in the proportions and other details of construction may beresorted to for successfully carrying the invention into practice.

Having fully described the invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a valve mechanism for locomotives, the combination of thevalve-rod and the link for operating same, means for reciprocating thelink vertically, link-blades pivoted to the link near its top andbottom, strips pivoted to the ends of the link-blades, an arm pivoted tothe upper strip at one end and to the connecting-rod at the opposite endand a strip pivoted to the strip of the lower link-blade and to the arm.

2. In combination with a link of a valveshipping mechanism, means forshifting, the link-blades pivoted to the edge of the link at Intestimony whereof I aflix my signature in the presence of two witnesses.

WILLIAM H. STRAUSE.

Witnesses:

J. E. PUGH, SAM W. JONES.

